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A fuel issue took mine out of service for 32 days. The fuel control module failed at 616 miles. GM had a hard time getting the part last fall. I ended up getting a new module, fuel pump and fuel tank. That control module is more advanced than the silverado since the tahoes and yukons can shut down up to 7 cylinders to save fuel. Please keep us posted
I keep hearing mention of this valve spring issue but I think I've only heard one tahoe/yukon owner on forums actually verify that they have experienced this issue. I would expect to hear alot of people complaining on forums if this were a significant widespread issue. Doesn't seem like anything to be concerned about and if it's going to fail I would imagine that would happen well within the warranty period.
Just follow the pick up truck forums. They have lots of members vs the Tahoe-Yukon forums. Also the corvette and camaro forums have plenty or blown spring posts. These 5.3 and 6.2 engines all came from the same plants with the batch of valve springs that were not properly heat treated. Some have blown leaving the car carrier and some have blown around 7000 miles. No recall from GM. There answer is to make the repair as these engines blow up. Pretty great huh? https://www.gm-trucks.com/forums/topic/243709-gm-service-bulletin-for-faulty-valve-springs/#comments
Even with the handful of people reporting issues on that thread, still seems like a very very small amount of affected vehicles. They sell mass quantities of these engines. The way these forums work is everybody and their mama posts when their engine blows up, if this was a widespread issue you would hear alot more about it. Not something I'll stress about. Chances are the vast majority of owners will run the life of their truck without this being a problem. I don't doubt there are ticking time bombs out there, just seems a bit blown out of proportion on some of these threads with very few owners actually reporting a failure.
I hear ya. I am just glad GM had my vehicle in the shop over 30+ days for another issue. It activated our states lemon law and gives me a way out legally. I will feel better with a later production model with the diesel
Depending on the Lemon Law settlement if we decide to keep our Tahoe one of the first things we are going to do is replace the valve springs with reliable aftermarket ones. The confidence I have right now for our engine is in the *******
Not a happy camper that GM is rolling the dice knowing darn well engines are failing across the country due to valve spring failure. Hopefully no one will get hurt or killed when their engine fails and the driver loses power But hey on the bright side GM recalled my vehicle for headlight color. I guess that shade of blue was such a huge safety issue 
Such is true on any new car forum. Plenty of happy owners of these new trucks racking up thousands of miles...including myself and others I know personally. However, anyone who buys GM expecting to be problem free didn't do their research. Not the most reliable brand but very capable family haulers and some damn cool features.
Therein lies the problem. If the customer is always right (continues to buy unreliable vehicles), then why change the formula? By lowering accepted standards we reinforce the lack of positive change. Whether the car/truck is 80% "good" is totally irrelevant. We're talking about $65K+ vehicles. Regardless of manufacturer.
